Water-valve for refrigerating-machines.



F. G. KEYES & A. L. BRETT..

WATER VALVE FOR REFRIGERATING MACHINES. APPLICATION FILED SEPT. I. 1916.

1,235,989. Patented Aug. 7, 1917.

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FREDERICK G. KEYES, OF I-IOBOKEN', NEW JERSEY, AND AFLEY LEO BRETT, OF SOUTH BBAINTREE, MASSACHUSETTS.

WATER-VALVE FOR REFRIGERATING-MAGHINES.

Specification of Letters Patent.

Patented Aug. 7, 1917.

Application filed September 1, 1916. Serial No..117.969.

To all whom it may concern:

Be it known that we, FREDERICK G. KnYEs and AFLEY LEO BRETT, both citizens of the United States, residing, respectively, at Hoboken, in the county of Hudson and State of New Jersey, and at South Braintree, in the county of Norfolk and State of Massachusetts, have invented certain new and useful Improvements in Water-Valves for Befrigerating-Machines, of. which the following is a full, clear, and exact description.

In certain forms of automatic refrigerating apparatus the volatile constituents of a refrigerating mixture are driven over by the action of heat from a distilling to a condensing chamber from whence they are conducted to a refrigerating chamber. When the latter is full or filled to 'a predetermined extent the heat is shut 05 from the distilling chamber, and water which during the opera tion of distillation was directed through or around the condensing chamber, is shut off from the latter and directed through or around the distilling chamber to promote the reabsorption of the ammonia by the absorbent constituents of the refrigerating I mixtures in the latter.

Generally and preferably all of the operations necessary to the attainment of this result are performed automatically and one way of accomplishing this is by electro-magnetic agency under the control of suitable circuit closers. Let it be assumed, for example, that a water supply is received through a proper pipe or conduit which is to be passed automatically through coils in or about the condensing chamber, and then in the distilling chamber. suitable valve is inserted in the said pipe which is operated by one or more electro magnets to direct the path of flow to one device or the other as occasion may require, and circuit closers controlled, it may be, by the filling or emptying of the refrigerating chamber are employed to energize or deenergize the said magnets at the proper times.

If the apparatus is to be purely automatic and intended to operate continuously for an indefinite period of time the greatest care must be exercised in the design or selection of the water controlling valve for many and obvious reasons, This problem confronted us in efforts to develo and perfect such a refrigerating system, ut we have success- In such cases a fully solved it by the apparatus on which we now base this application for Letters Patent.

In carrying out our improvement we form a water tight casing, composed in part or in whole of non-magnetic metal containing a valve seat and rotary valve that controls the flow of water from an inlet to either one of two outlet ports according to its position in its seat.

Within the said casing is a magnet bar or armature properly connected with the valve as by a slotted link, and which when moved from one .to the other of its limiting positions operates to turn the valve and toopen one outlet port and close the other. This armature is surrounded by solenoids placed or wound on the exterior of the metal casing, but so as to exert a strong magnetic pull upon it when they are energized, so that the armature is shifted to either limiting position according to which of the two solenoids is rendered active by the circuit controllers.

. It is important, and by our improvement it is accomplished, that the valve mechanism should be entirely and effectually inclosed, and that the electro magnets or solenoids should be exterior to the casing without visible loss of attractive influence upon the armature core. As will be seen from the detailed description of our device which follows these conditions we secure.

Figure 1 is a sectional view of our improved valve, and

Fig. 2 is a similar sectional view of the same at right angles to the plane of Fig. 1.

In these drawings A designates a casting of metal, preferably brass, forming a casing or receptacle in which the working parts of the valve are contained. It isclosed by a plate or cover B. At each end of this cast- .water chamber which on its movement is adapted to be brought into register with either of two outlet pipes or ports H K.

The inlet for the device is through a pipe L which is adapted to bring water from any suitable source to the valve chamber.

In a recess in the wall of the casting is an iron core or bar M the ends of which extend beyond the casting and into the extensions C. This bar is connected to the valve by a plate or bar N having a slot with which engages a pin 0 on the bar, and the bar is adaptedto be shifted to its extreme or limiting positions by two electro-magnetic solenoids of coils P wound about the extensions C.

The position of the core and of the valve is determined by the particular coil P which may be energized, hence the water entering by the pipe or inlet L is directed through either outlet H or K according to which coil is energized.

None of the working parts of this valve are ever exposed to the air. The casing is hermetically sealed, and as the parts are designed and associated there is no material wear and the device is capable of indefinitely continued use.

What we claim is 1. A water controlling valve for automatic apparatus of the kind herein described, comprising a closed casing, a valve seat, a rotary valve and a magnetic core connected with and adapted in its movement between its limiting positions to turn the valve to control its outlet ports, these parts being all contained within the closed casing and the electro-magnetic coils exterior to the casing but surrounding to the proper extent the ends of the armature core and adapted nected with the valve and adapted in its movement between limiting positions to turn the same, these parts being contained within the casing and the ends of the bar lying in extensions from the casing, and the electro-magnetic coils exterior to the casing and surrounding the said extensions and adapted when energized to shift the core,

between its limiting positions.

3. A water controlling valve for automatic apparatus of the kind herein described, comprising a closed casing, a valve seat, a conical valve, a magnetic bar or core, a slotted arm extending from the valve and connected to a pin on the core, so that the movement of the bar to its limiting positions turns the valve to control its outlet parts, these parts being contained within the casing, and the electro-magnetic coils surrounding the casing and adapted when energized to shift the bar or core, between its limiting positions.

FREDERICK G. KEYES. A. LEO BRETT. 

